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COAL OIL HEATER Qrignal Filed June l. 1925 t L u u;

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i' 'f 22 :I f 7l i L I7 n /3 g, INVENTOR. 26 JAMES B. Monnow,

A TTORNE YS.

Patented Jan. 3, 1928.

UNITED STATES JAMESB. MORROW, OF OAKLAND, CALIFORNIA.

conn-cin nnernn.

Application filed June 1, 1925, Serial No. 33,895. Renewed June 14, 1927.

My invention is an improvement in coaloil heaters pertaining particularly to the wick, feed and the burner control.` An object of myinvention is to feed the tubular wick so that it will be lifted equally around its whole perimeter, timekeeping theupper edge square to the burner: and an object of my burner is to `definitely limit and control Y the lift of the wick to prevent smoking and the obtaining `of the. most efficient flame.

ln the wick feeding mechanism the wick is mounted on the exterior of a tube and a central rack bar passes through the usual central air tube of the burner and by the fork connects, through slots in the air tube, to the wick carrying tube. A pinion operated by a thumb nut raises and lowers the rack and hence controls the wick. In the details of the burner, the wick stop flange on the central lifting part of the burner is i limited in its upward movement by a screw threaded rod adjustable for different degrees of lifting of the burner air vent.

My invention will be morereadily under stood from the following description and drawings in` which y y y Figure 1 is a vertical section through a coal-oil heater showing my wick feeder and burner control in section mounted within the oil fount. y

Figure 2 is a vertical section of an oil burner showing the upper part of the wick feeding mechanism in detail, with the burner limiting device in full.

Figure 3 is an elevation of the upper part of the air tube showing the attachment of my burner limiting bracket and the slots in the air tube.

Figure 4 is a vertical section of my wick supporting and feeding tube showing the rack bar with the forked ends for lifting the wick.

My wick feeding device will be first described, shown in connection with the heater. The numeral 1 indicates the heater as a whole, having an oil fount 2, a burner space 3 and the heater chimney 4, with the air outlet 5. The oil fount is constructed with a central air tube 6, firmly attached to the base 7 of the fount and extending upwardly tothe burner. My wick carrier comprises a cylinder or tube 3 which has outwardly projecting prongs 9 to engage the circular wick 10: This latter is shown flared atthe lower end 11, 4but this is immaterial.

t liftingI rack bar 12, having rack teeth 13,` is constructed with forks 14, which have laterally extending fingers 15, engaging in sockets 16, formed on the interior of the wick `cylinder 3. An operating shaft l'i is mounted in brackets 13 at the base of the fount, and has a pinion .19 to operate the rack bar. This operating shaft is rotated by a thumb nut 20, which is shown slidably mounted on the shaftby means of a slot 21 on the sleeve of the nut, engaging a pin 22. on the shaft. Short legs 23 are attached to the base of the fount and form a stand when the fount is removed from the filling or other purposes.

The manner of operating and assembling my wick lifter is as follows The wick is heater `for pulled over and stretched properly on the,`

exterior ofthe wick cylinder 8 and adjusted in height. The prongs 9 are embedded in the wick. The wick cylinder with the rack bar is then lowered on the` exterior of the air-tube 6, with the fingers of the forks y extending through slots 24 in ythe air tube.

These slots only extend downwardly a short distance, enough to give a lifting movement. to the rwick when the thumb-nut is operated to "turn the pinion 19.

My burner wick limiting device is constructed as follows The burner cap 25 of the well known type, having a foraminated air outlet wall 2G, a depending skirt 27 and a horizontal collar 28 is slidably mounted in the upper end 29 of the air tube 6. The outer air-vent cyinders 30, having a series of perforations, are attached to the upper wall 31 of the oil fount. A bracket 32 is formed with a cross-bar 33 and upwardly extending arms 34, these latter having a pairof bayonet slots 35 to engage pins 36, which are fixed on the inside of the air-tube 6. Bythis construction the bracket is held in a constant position. A threaded rod 37 extends through an aperture 38 in the crossbar 33, and extends upwardly `through the burner cap through an aperture 39 formed in the top. A nurled nut 40 is tightly threaded on the upper end 41 of the rod 3'? and a. lock nut 42 secures this rod after it has been screwed into the aperture 38 the required distance.

r.the upper portion 43 of the arms 34, having the bayonet slots, is curved to conform to the air tube 6, and the pins 36 are located so that these arms are below the top of the burner. In lthe assembly and adjustment ot the burner the nurled nut l0 is removed and the rod 37 is inserted through the apertures. The lock nut 4t2 is loosened until the adjustment is made. This is done by inserting the cap With the bracket 32 into the air tube 6. The bayonet slots are fitted over the pins 36 and the bracket is given a turn due to the square part 43 of the rod 37, engaging a square aperture in the burner cap 25. As the cap can slide up and down on the rod, the collar 28 will rest on the top of the air tube 6. i The Wick will then be elevated by means of the thumb-nutI 2O and the rack-bar l2 until the wick is raised the proper distance to give the desired flame. This will elevate the cap by the collar 28. By turning lthe nurled nut 40, the threaded rod 37 is threaded through the bar 33 until the nut 40 contacts with the upper surface of the burner cap. The burner is then carefully removed and the lock-nut clamped against the bar 33. When the burner is again inserted inplace, and the wick is turned up. it Will elevate the burner cap until the top of the cap contacts with the nurled nut 40. ylfhis device therefore VYforms an arrangement tor adjusting the burner to different amounts of Wick opening and hence lor any .desired flame Within the limits of the burner. The adjustment may be lined so that it is practically impossibletor the burner to smoke,

yand after lighting no further attention is needed, whether it is turned on full or partly, until the Wick burns and again requires to' be turned up.

My invention may be considerably changed in details or to suit different types of coal-oil heaters now on the market, and may be arranged to lit present heaters as Well .as a complete new device.

Having described my invention, what l claim is l. In an oil heater, an air tube. a wick cylinder slidable thereon, a wick mounted on the exterior or the cylinder so as to be substantially flush therewith at the upper end and an axially movable meu'lber ou the inside or the cylinder tern'iinating at its upper end in 'l'orited branches passing through vertical slots in the air tube into the body of the cylinder so as to allow the latter lo he adjusted by the former.

2. A device. as defined in claim l. in which the tips of the branches engage the cylinder near the upper end thereof.

3. A real-oil heater comprising in com bination an oil fount, an air tube extending centrally through said gtount, a burner cap slidably mounted in said air tube and meansconnected to the burner cap and detachably engaging the air tube to limit the upward movement ot the burner cap.

l. coal-oil heater as claimed in claim 3, in which the means to limit the burner cap comprises a bracketattachable to the inside ot the air tube and an adjustable stem or rod extending upward from the bracket through the burner cap with means on said rod to limit the upward movement o' th I burner cap.

A coal-oil heater as claimed in claim il, having a bracket with a transverse bar and upstanding arms with bayonet slots` therein, said slots having detachable engagingl pins on the interior ot the air tube and a threaded stem or rod extending through said transverse bar and through the burner cap. and having a stop device on the lop oit the rod to limit the upward movement of" the burner when elevated h v the upward movement olI the wick.

ln testimony whereofA l allix my signature.

JAMES B. MORROW. 

